EXCERPT If, as Mattin proposes, the movement from Schoenberg to Cage was the step from equality of tone to equality of sounds, what is the next threshold of equalisation? Or in terms borrowed from Jameson: What is no longer to be done in the realms of noise and free improvisation? Mattin’s response is uncompromising. Since structures of tone and sound cannot be abstracted from social structures, the gestures, codes, and conventions that have turned noise and free improvisation into recognisable genres are no longer to be done because they prevent us from seeing that the aesthetic liberation of tone and sound ultimately entails the social liberation of humanity. Mattin’s Marxism compels him to connect improvisation’s staging of freedom to freedom’s social realisation…